Patents by Inventor Tetsuo Okaya

Tetsuo Okaya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Watch dial
    Patent number: D526923
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: August 22, 2006
    Assignee: Seiko Watch Kabushiki Kaisha
    Inventor: Tetsuo Okaya
  • Watch
    Patent number: D266229
    Type: Grant
    Filed: February 29, 1980
    Date of Patent: September 21, 1982
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Tetsuo Okaya
  • Watch
    Patent number: D266993
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: November 23, 1982
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Tetsuo Okaya
  • Watch case
    Patent number: D551100
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: September 18, 2007
    Assignee: Seiko Watch Kabushiki Kaisha
    Inventor: Tetsuo Okaya
  • Wrist watch case
    Patent number: D319789
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: September 10, 1991
    Assignee: Seiko Epson Corporation
    Inventor: Tetsuo Okaya
  • Time recorder
    Patent number: D710218
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: August 5, 2014
    Assignee: SEIKO Precision, Inc.
    Inventors: Hideki Tanaka, Tetsuo Okaya